Ara es mostren els items 1-20 de 65

  • Adaptivity based on error estimation for viscoplastic softening materials 

    Díez, Pedro; Arroyo Balaguer, Marino; Huerta, Antonio (2000-02)
    Article
    Accés obert
    This paper focuses on the numerical simulation of strain softening mechanical problems. Two problems arise: (1) the constitutive model has to be regular and (2) the numerical technique must be able to capture the two scales ...
  • Adhesion and friction control localized folding in supported graphene 

    Zhang, Kuan; Arroyo Balaguer, Marino (American Institute of Physics (AIP), 2013-05)
    Article
    Accés restringit per política de l'editorial
    Graphene deposited on planar surfaces often exhibits sharp and localized folds delimiting seemingly planar regions, as a result of compressive stresses transmitted by the substrate. Such folds alter the electronic and ...
  • A finite deformation membrane based on inter-atomic potentials for the transverse mechanics of nanotubes 

    Arroyo Balaguer, Marino; Belytschko, T. (2003-03)
    Article
    Accés obert
    A finite deformation hyper-elastic membrane theory based on inter-atomic potentials for crystalline films composed of a single atomic layer is developed. For this purpose, an extension of the standard Born rule that exploits ...
  • An adaptive meshfree method for phase-field models of biomembranes. Part I: Approximation with maximum-entropy basis functions 

    Peco Regales, Christian; Arroyo Balaguer, Marino; Rosolen, Adrian Martin (2013-09)
    Article
    Accés restringit per política de l'editorial
    We present an adaptive meshfree method to approximate phase-field models of biomembranes. In such models, the Helfrich curvature elastic energy, the surface area, and the enclosed volume of a vesicle are written as functionals ...
  • An adaptive meshfree method for phase-field models of biomembranes. Part II: A Lagrangian approach for membranes in viscous fluids 

    Peco Regales, Christian; Arroyo Balaguer, Marino; Rosolen, Adrian Martin (2013-09)
    Article
    Accés restringit per política de l'editorial
    We present a Lagrangian phase-field method to study the low Reynolds number dynamics of vesicles embedded in a viscous fluid. In contrast to previous approaches, where the field variables are the phase-field and the fluid ...
  • An atomistic-based finite deformation membrane for single layer crystalline films 

    Arroyo Balaguer, Marino; Belytschko, T (2002-09)
    Article
    Accés obert
    A general methodology to develop hyper-elastic membrane models applicable to crystalline films one-atom thick is presented. In this method, an extension of the Born rule based on the exponential map is proposed. The ...
  • An atomistic-based foliation model for multilayer graphene materials and nanotubes 

    Ghosh, Susanta; Arroyo Balaguer, Marino (2013-01)
    Article
    Accés obert
    We present a three-dimensional continuum model for layered crystalline materials made out of weakly interacting two-dimensional crystalline sheets. We specialize the model to multilayer graphene materials, including ...
  • A stabilized formulation with maximum entropy meshfree approximants for viscoplastic flow simulation in metal forming 

    Greco, F.; Filice, L.; Peco, Christian; Arroyo Balaguer, Marino (2015-07-01)
    Article
    Accés obert
    The finite element method is the reference technique in the simulation of metal forming and provides excellent results with both Eulerian and Lagrangian implementations. The latter approach is more natural and direct but ...
  • A variational model of fracture for tearing brittle thin sheets 

    Li, Bin; Millán Zurita, Daniel; Torres Sánchez, Alejandro; Arroyo Balaguer, Marino (2018-10)
    Article
    Accés restringit per política de l'editorial
    Tearing of brittle thin elastic sheets, possibly adhered to a substrate, involves a rich interplay between nonlinear elasticity, geometry, adhesion, and fracture mechanics. In addition to its intrinsic and practical interest, ...
  • Blending isogeometric analysis and local maximum entropy meshfree approximants 

    Rosolen, Adrián; Arroyo Balaguer, Marino (2013-09)
    Article
    Accés obert
    We present a method to blend local maximum entropy (LME) meshfree approximants and isogeometric analysis. The coupling strategy exploits the optimization program behind LME approximation, treats isogeometric and LME basis ...
  • Cell-based maximum entropy approximants 

    Millán, Raúl Daniel; Sukumar, N; Arroyo Balaguer, Marino (2015-02-01)
    Article
    Accés obert
    In this paper, we devise cell-based maximum-entropy (max-ent) basis functions that are used in a Galerkin method for the solution of partial differential equations. The motivation behind this work is the construction of ...
  • Cell-based maximum-entropy approximants 

    Millán, Daniel; Sukumar, N; Arroyo Balaguer, Marino (2015-02-01)
    Article
    Accés obert
    In this paper, we devise cell-based maximum-entropy (max-ent) basis functions that are used in a Galerkin method for the solution of partial differential equations. The motivation behind this work is the construction of ...
  • Charting molecular free-energy landscapes with an atlas of collective variables 

    Hashemian, B.; Millán, Raúl Daniel; Arroyo Balaguer, Marino (2016-11-07)
    Article
    Accés obert
    Collective variables (CVs) are a fundamental tool to understand molecular flexibility, to compute free energy landscapes, and to enhance sampling in molecular dynamics simulations. However, identifying suitable CVs is ...
  • Coexistence of wrinkles and blisters in supported graphene 

    Zang, Kuan; Arroyo Balaguer, Marino (Elsevier, 2017-07-01)
    Article
    Accés restringit per política de l'editorial
    Blisters induced by gas trapped in the interstitial space between supported graphene and the substrate are commonly observed. These blisters are often quasi-spherical with a circular rim, but polygonal blisters are also ...
  • Computational evaluation of the flexoelectric effect in dielectric solids 

    Abdollahi Hosnijeh, Amir; Peco Regales, Christian; Millán, Daniel; Arroyo Balaguer, Marino; Arias Vicente, Irene (American Institute of Physics (AIP), 2014-09-07)
    Article
    Accés restringit per política de l'editorial
    Flexoelectricity is a size-dependent electromechanical mechanism coupling polarization and strain gradient. It exists in a wide variety of materials, and is most noticeable for nanoscale objects, where strain gradients are ...
  • Computing the volume enclosed by a periodic surface and its variation to model a follower pressure 

    Rahimi Lenji, Mohammad; Zhang, Kuan; Arroyo Balaguer, Marino (2015-03-01)
    Article
    Accés obert
    In modeling and numerically implementing a follower pressure in a geometrically nonlinear setting, one needs to compute the volume enclosed by a surface and its variation. For closed surfaces, the volume can be expressed ...
  • Confined bilayers passively regulate shape and stress 

    Staykova, M.; Arroyo Balaguer, Marino; Rahimi Lenji, Mohammad; Stone, H.A. (2013-01)
    Article
    Accés obert
    Lipid membranes are commonly confined to adjacent subcellular structures or to artificial substrates and particles. We develop an experimental and theoretical framework to investigate the mechanics of confined membranes, ...
  • Continuum mechanics modeling and simulation of carbon nanotubes 

    Arroyo Balaguer, Marino; Belytschko, T. (2005-12)
    Article
    Accés obert
    The understanding of the mechanics of atomistic systems greatly benefits from continuum mechanics. One appealing approach aims at deductively constructing continuum theories starting from models of the interatomic interactions. ...
  • Curved fluid membranes behave laterally as an effective viscoelastic medium 

    Rahimi Lenji, Mohammad; DeSimone, Antonio; Arroyo Balaguer, Marino (2013-08-21)
    Article
    Accés restringit per política de l'editorial
    The lateral mobility of membrane inclusions is essential in biological processes involving membrane-bound macromolecules, which often take place in highly curved geometries such as membrane tubes or small organelles. Probe ...
  • Diverse corrugation pattern in radially shrinking carbon nanotubes 

    Shima, Hiroyuki; Sato, Motohiro; Iiboshi, Kohtaroh; Ghosh, Susanta; Arroyo Balaguer, Marino (2010)
    Article
    Accés obert
    Stable cross sections of multiwalled carbon nanotubes subjected to electron-beam irradiation are investigated in the realm of the continuum mechanics approximation. The self-healing nature of sp2 graphitic sheets implies ...